Home / 26,703.12-36,809.40-19,978.56

Finding the Fourth Proportional to 26,703.12, 36,809.40 and 19,978.56

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Solution

The fourth proportional to 26,703.12, 36,809.40 and 19,978.56 is: 27,539.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,703.12 : 36,809.40 = 19,978.56 : x
  2. Step 2: Convert to fraction form
    26,703.12/36,809.40 = 19,978.56/x
  3. Step 3: Cross multiply
    26,703.12x = 36,809.40 × 19,978.56
  4. Step 4: Simplify right side
    26,703.12x = 735,398,806.46
  5. Step 5: Solve for x
    x = 735,398,806.46/26,703.12
  6. Step 6: Final answer
    x = 27,539.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.